Pineapple Guava Prone to Anthracnose: How to Protect

Acca sellowiana

Susceptibility: High Severity: High Difficulty: Medium

Anthracnose on Pineapple Guava: What to Know?

Anthracnose on Pineapple Guava (Acca sellowiana) is a fungal condition with high severity. Pineapple Guava has high susceptibility to this disease. Anthracnose is a fungal disease caused by fungi in the genus Colletotrichum that affects many plants, including vegetables, fruits, and trees. The disease thrives in cool, wet conditions, causing dark...

Pineapple Guava is a medium-care plant. Recovery from Anthracnose takes approximately 14 days with proper treatment.

Pineapple Guava is highly susceptible to Anthracnose, unlike most plants in the same family. Without early intervention, recovery takes 21 days instead of 14 days. Unlike bacterial infections, Anthracnose on Pineapple Guava can be managed with organic fungicides.

🔍 What Does Anthracnose Look Like on Pineapple Guava?

• Small irregular yellow or brown spots on leaves
• Dark sunken lesions on leaves, stems, flowers and fruits
• Water-soaked lesions that darken as they age
• Pink gelatinous masses of spores in lesion centers during warm, moist weather
• Spots that expand and may cover entire leaves
• Defoliation in advanced stages

❓ What Causes Anthracnose on Pineapple Guava?

→ Caused by fungi in the genus Colletotrichum
→ Cool wet weather promotes development
→ Optimum temperature between 75-85°F (24-29°C)
→ Foliage wet for extended periods of time
→ Fungi overwinter in seeds, soil and garden debris
→ Spores spread through water droplets

💊 How to Treat Anthracnose on Pineapple Guava?

TLDR: Treat Anthracnose on Pineapple Guava with quick treatment (~7 days) or organic (~14 days). Pineapple Guava has high susceptibility to this disease.

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Quick Fixes

Remove and discard all visibly infected parts

Apply commercial systemic fungicide (azoxystrobin or mancozeb)

Adjust irrigation to avoid wetting foliage

Second application of systemic fungicide

Assess treatment effectiveness

🌿

Organic Treatment

Remove all infected plant parts and discard in plastic bag

Apply organic liquid copper spray to all plant surfaces

Switch irrigation regime to drip, avoiding foliage wetting

Second application of copper fungicide or neem oil

Assess progress and remove any new lesions

Final organic fungicide application and ongoing monitoring

🛡️ How to Prevent Anthracnose on Pineapple Guava?

TLDR: Prevent Anthracnose on Pineapple Guava with 8 essential preventive care practices.

✓ Implement drip irrigation instead of overhead watering
✓ Give plants enough room to breathe and reduce humidity
✓ Remove infected plant material after harvest
✓ Practice crop rotation between hosts and non-hosts
✓ Choose resistant plant varieties when possible
✓ Use western grown seeds not exposed to the disease
✓ Avoid wetting foliage during watering
✓ Ensure good air circulation around plants

🌱 How to Care for Pineapple Guava to Prevent Anthracnose?

💧 How to Water

Water every 7 days during the growing season. Established plants are drought-tolerant but benefit from consistent moisture during flowering and fruit development. Avoid waterlogging.

☀️ Lighting

Plant in full sun for best fruit production. Tolerates partial shade but flowering and fruiting will be reduced. Aim for at least 6 hours of direct sunlight per day.

🪴 Ideal Soil

Prefers well-draining soil with a slightly acidic to neutral pH (5.5–7.0). Tolerates sandy or loamy soils as long as drainage is adequate. Avoid waterlogged or highly alkaline soils.

Frequently asked questions

Can Anthracnose kill my Pineapple Guava?

Yes, without treatment, Anthracnose can be fatal to Pineapple Guava. Early detection and treatment are key.

How long does Pineapple Guava take to recover from Anthracnose?

With proper treatment, recovery takes approximately 14 days. Without treatment, it can take significantly longer.

Is Anthracnose contagious to other plants near Pineapple Guava?

Yes, Anthracnose can spread to nearby plants. Isolate the affected Pineapple Guava immediately.

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